1. Investigation 2 Part 2 Vocabulary
Allele:
D: variations of genes that determine traits in organisms; the two corresponding alleles on paired chromosomes constitute a gene P:
Chromosome:
D: a structure made of coiled DNA that transfers hereditary information to the next generation P:
Dominant:
D: a form of gene that is expressed as the trait when a dominant allele is present P:
deoxyribonucleic acid (DNA):
D: a molecule that contains an organism’s genetic information P:

2. Investigation 2 Part 2 Vocabulary
Feature:
D: a structure, characteristic, or behavior of an organism, such as eye color, plant height, or timing of migration P:
Gene:
D: the basic unit of heredity carried by the chromosomes; codes for proteins which determine the traits of an organism P:
Generation:
D: offspring that are at the same stage of descent from a common ancestor P:
Genome:
D: an organism’s complete set of DNA P:

3. Investigation 2 Part 2 Vocabulary
Genotype:
D: an organism’s particular genetic makeup P:
Heredity:
D: the passing of traits from parent to offspring P:
Homozygous:
D: a gene composed of two identical alleles P:
Heterozygous:
D: a gene composed of two different alleles (a dominant and a recessive) P:

4. Investigation 2 Part 2 Vocabulary
Inherited Characteristics:
D: a genetic trait that an ancestor passes on to its descendants P:
Phenotype:
D: the traits produced by the genotype; the expression of genes P:
Protein:
D: a molecule that is part of cells and cell structures; determines the traits of an organism P:
Population:
D: all the individuals of one kind in a specified area at one time P:

5. Investigation 2 Part 2 Vocabulary
Recessive:
D: a form of a gene that is expressed only when a dominant allele is not present P:
Trait:
D: the specific way a feature is expressed in an individual organism; for example, blue and green eyes are traits for eye color P:
Variation:
D: the range of expression of a trait within a population P: